Calk-sharpener



' (No Model.)

'J. H. E. CLARK. GALK SHARPBNER.

Patented July 19, 1892.

.I :EEE

CYQZZ Zl UNITED STATES PATENT OFFICE.

JAMES H. E. CLARK, OF COUNCIL BLUFFS, IOWA.

CALK-SHARPEN ER.

SPECIFICATION forming part of Letters Patent No. 479,204, dated July 19,1892.

Application filed February 16, 1892. Serial No. 421,761. (No model.)

To all whom it may concern:

Be it known that I, JAMES H. E. CLARK, of Council Bluffs, in the countyof Pottawattamie and State of Iowa, have invented certain usefulImprovements in Calk-Sharpeners; and I do hereby declare that thefollowing is a full, clear, and exact description of the invention, suchas will enable others skilled in the art to which it appertains to makeand use the same, reference being had to the accompanying drawings,which form a part of this specification.

This invention has relation to a new and novel calk-sharpener.

The object of this invention is to provide a simple device by means ofwhich the calks upon the shoes of draft animalssuch as mules andhorses-may be readily and speedily sharpened without taking the shoefrom the animals hoof, as will be described more fully hereinafter, andfinally pointed out in the claims.

In the accompanying drawings, Figure 1 shows a calk-sharpener, withparts broken away, as attached to a horses hoof. Fig. 2 is a bottom viewof the pivot-block, showing the arrangement of the worm-feed. Fig. 3 isa view, partly in section, illustrating the connection of thepinion-stock to the pivot-block, while Fig. 4 is a central sectionalview of the adjustable spur-gear as employed in my devlce.

The aim of my invention is to provide a horseshoe-call: sharpener thatshall be so constructed that it may be detachably secured to the shoewithout danger of injuring thehoof, and that shall be sufficientlysimple in its construction and operation so as to enable any unskilledoperator to use the same.

In furthering the aim of my invention I provide a pivot-block comprisingthe bar A, of wrought or malleable cast-iron, which is provided with thecircle A, forming part thereof. The bar is further provided with twolongitudinal grooves, which are adapted to adj ustably hold the fourT-shaped gripping-jawsB B B B, which are mounted in sets of two upon theright and left handed screws B B. These screws work within the groovesof the bar A, being supported at each end by means of the journal-platesB B as will be understood-by referring to Fig. 2. Centrally the bar A isprovided with the pivot-post A integral therewith, and by means of whichthe pinion-stock is secured thereto. The circle A is provided with theworm C at aconvenient point, which is provided with an operating-headand held by means of the bracket C, as shown.

The base D of the pinion-stock is provided with a suitable openingadapted to contain the pivot-post A and is pivotally held upon said postby means of the nut D. This base D is provided with the worm-gear E,which is engaged by the worm C, so that these two circles A and E mayboth be adjusted or held in a locked position by means of said worm.Detachably secured to the base D is the pinion stock F, provided at asuitable point, near the upper end, with the threaded stubshaft F andterminating in an angular portion adapted to offer a bearing to thecrowngearing II. This stock is of any suitable cast or forged metal. Adjustably held upon the shaft F is the threaded sleeve F provided with theshoulder I, the operatinghead I, and the groove I Upon this sleeve thecompound spur-gear K is revolubly held by means of the shoulder I andthe plate K. The pinion of this gear is engaged by the crown-gear H,connected by means of a stubshaft H to the stock F and provided with theintegral grooved pulley K and a suitable opcrating-crank 7c. Passingthrough the base of the stock F is the adjustable free millingshaftL,provided at the forward end with the miller M and at the rear with thefixed pinion M. This pinion meshes with the compound gear K, while theshaft Lis revolubly secured to the adjustable sleeve F by means of thetie-bar N. This bar N acts as an end bearing to the shaft L and at itslower end works between the pinion M and an end nut and at its upper endwithin the groove 1 so that as the sleeve F is adjusted the connectedshaft Lisgivena correspondingadjustment. Upon the sides the stock isprovided with the supporting-handles O C.

When all the instrumentalities have been properly arranged, theoperation of my device would be as follows: The sharpener is secured tothe shoe by means of the jaws B B B B, two of which work outward and twoinward, so that the shoe is securely clampedbetween them, the screws 13B being operated by means of a key. The miller M, secured to the forwardend of the shaft-L, is then properly adjusted by means of the sleeve Fand the sharpener started, being operated at the crown-wheel by hand orany other power. The miller is now fed forward and the feed adjusted bymeans of both thesleeveF and the worm C until the calk has been properlysharpened. WVhen the forward calk has been sharpened, it is simplynecessary to feed the miller around by means of the worm C until therear calks are reached, where the miller is again adjusted and fed fromside to side until the calks are in proper condition. For. the variousforms of calks difierent cutters are used.

Now, having described my said inventionand the best method known to meof operating the same, what I claim as new, and desire to adjustableupon said bar by means of a worm and. gear, a cutter-shaft within saidstock,

provided with a pinion, an adjustable gear upon. said stub-shaft,meshing with saidpinion, and means for operating said gear, allsubstantially as and for the purpose set forth.

3. .In 'a calla-sharpener, the combination of a clamping base-bar, apinion-stock pivotally secured to said bar and provided near its upperend with a threaded stub-shaft, a cuttor-shaft free within said stock,provided with a pinion, a threaded sleeve adjustable upon said threadedstub-shaft, provided with agear meshing with said pinion, and means foroperating said gear, substantially as set forth.

4. In a calk-sharpener, the combination of the followinginstrumentalities, to wit a clamping base-bar provided with a worm, a

pivotedpinion-stocksecured to said bar, having a threaded stub-shaftnear its upper end, and a worm-gear meshing with said worm at its lowerend, a cutter-shaft free within said :stock, provided with a pinion, athreaded sleeve upon said stub-shaft, having a gear meshing with saidpinion, a tie-bar connecting said cuttershaft to said sleeve, and meansfor operating said gear, all substantially as and for the purpose setforth.

5. In a calk-sharpener, the combination of the followinginstrumentalities, to wit: a clamping base-bar, a worm connected to saidbar, a pivoted pinion-stock secured to said bar, provided at theupperendwith a shaft opening centrally with a threaded stub-shaft, and at thelower end with aworm-gear,'a cutter-shaft free within said stockprovided with a pinion, and a compound gear andlpinion adjustable uponsaid stub-shaft, said gear meshing with the pinion upon the cutter--shaft, a crown-gear securedto the upper end of the stock, saidcrown-gear meshingwith the .pinion of. said compound gear, atie-bar-rcvolubly securing said cutter-shaft to said com- .pound gear,and meansfor actuating said crown-gear to operate said cutter-shaft,said cutter-shaft havinga radial and circumferential adjustment withinone plane,allsubstantially as and for the purpose set forth.

In testimony whereofI afiix my signature in presence of twowitnesses.

JAMES H. E. CLARK. Witnesses:

GEo. F. WRIGHT, JOHN N. BALDWIN.

